Harvester platform



July 21, 1925.

W. J. COULTAS ET AL HARVES TER PLATFORM July 21, 1925.

W. J. COULTAS ET AL HARVESTER PLATFORM Filed June 30, 1920 2Sheets-Sheet 2 Patented July 21, 1925.-

UNITED STATES 1,546,436 PATENT OFFICE.

-iFJ'ILBlIIR J. COUL'I'AS AND FREDERICK I). WILSON, OF IMOLINE,ILLINOIS, ASSIGNORS TO DEERE & CGIVIPANY, F MOLINE, ILLINOIS, ACORPORATION OF ILLINGIS.

HARVESTER PLATFORM.

Application filed June 30, 1920.

To aZZ Zl]L077L it may concern:

lie it known that we, Wtnnur. J. COULTAS and Fanniinici; 1). WILSON,citizens ot the United States, residing at Moline, in the county of RockIsland and State of Illinois, have invented certain new and usefulImprovements in Harvester Platforms, of which the following is aspecification, reference being had therein to the accompanying d l 'awing.

Our invention relates to harvesting Inachinery and more particularly tothe platform of harvesters and binders, and the object of our inventionis to provide a harvest er platform constructed to withstand varyingstrains to which it usually subject.

Referring to the drawings in which simi r numerals indicate identicalparts l igure 1 is a plan view of a harvester 20 platform with canvasand rollers omitted.

Figure 2 is a sectional detail indicated by the arrows and line 2*! ofFigure 1.

Figure 3 is a sectional detail indicated by the arrows and line ofFigure 1.

Figure 4 is a section on the line 1- 1 of Figure 1 viewed from the frontof the platform.

Figure 5 is an outer end elevation of the platform.

" Figure 6 is a sectional detail on the line 66 of Figure 2.

Figure 7 is a sectional detail on the line 7'? of Figure 1, and

Figure 8 is a fragmentary end view of the inner end of the platform.

The frame of the platform as usually constructed is composed of a Z bar1 to which is securely bolted the. guard finger 2. Angle bars 3 and 1are rigidly secured to the bar 1 and extend rearwardly at right anglesthereto. The bottom 5 of the platform is formed preferably of sheetmetal riveted to the bar 1 and the bars 3 and 1-.

A casting 6 is mounted on the grainward end of the bar 1 and has a bar 7bolted thereto and extendi u g rearward parallel to the bar 4;. A.supporting angle bar 8 is riveted to the stuhbleward portion of the bar1 and supports the latter on the harvester frame in a well known manner,common in the art but not shown in the drawing.

The rear of the platform bottom5 is bent vertically and to the innerface of it is bolted a rear frame bar 9 parallel to the bar 1, andpreferably of wood; a similar the bar 1.

Serial No. 393,031.

bar 10, parallel with the bar 9 is secured to the bar 8 and to angle.pieces 12 rigid on The bars 9 and 10 are such as commonly employed tosupport the rollers and canvas of the platform conveyor. At the rearstubbleward end of the platform, to add rigidity to the structure atthat point, we provide a standard 13, which is'riveted to the bar 3, anda brace 14 which is rigidly secured to the standard 13 and extendsgrainwardly and is riveted to the rear bent portion of the bottom 5 andto the bar 9.

Bolted 011 the rear end of the frame bar 4 is a beam 15 which extendsstubbleward at a. rearward angle to the rear of the plat form and isrigidly secured to part 16 of the haiwester frame, and also to the bar 3of the harvester platform frame which is extended re: rward beyond thelatter. An angular bracket 17 is mounted on the grain ward end of thebeam 15 and rigidly bolted to the rear end of said bracket is the rearend of the bar 7. A wedge shaped block 18 is inserted between thegrainward end of the beam 15 and the rear of the platform and is held inplace by suitable bolts, and intermediate the ends of the beam 15 ablock 19 is secured in place by suitable bolts which pass through saidblock, and through the beam 15 and the bar 9. Rigidly secured to theunderside of the bar 1 and extended diagonally rearward and stubblewardis a brace 20 having its rearward portion p-roj ected beyond theplatform. and bolted to the beam 15. A similar brace 21 is bolted orriveted to the bar 1, parallel with. the brace 20, and is also extendedbeyond the platform and secured to the beam 15 adjacent the stubblewardend of the latter; the side bar 3 is also projected beyond the platformand: rigidly connected to the beam 15. Both of the braces 20 and 21 areangle bars and the bottom 5 is securely riveted thereto.

In general the weaker part of a. harvester and binder is the platformupon. which cut grain is received to be conveyed to the elevator on itsway to the binding mechanism, and while the stubbleward end of theplat-foam is sutiiciently rigid by reason of its front and rearconnection to the main frame of the harvester, the grainward end, beingsupported by a grain wheel only, is liable to sag, particularly in aforward direction, and: the grainward end of the front of the plat formhas a tendency to drop, and consequently destroy that parallelism of thecutting mechanism with the ground which is essential to efficientvoperation. With our construction, as shown and described, we haveovercome the Weaimess of the platform as ordinarily constructed, andstrengthened it in such a manner as to preserve that proper alinement ofthe parts necessary to efficient harvesting.

What we claim is z- 7 1. In a platform for harvesters, the com binationof a frame comprising front and rear bars and side bars, a beamextending stubbleward at an angle to the rear bar, and braces secured tothe beam and extending diagonally grainward and secured to the frontbar.

2. In a platform for harvesters, the combination of a frame comprisingfront and rear bars and side bars, a beam extending stubbleward at an.angle to the rear bar, and a plurality of braces secured to the beam andextending in parallelism diagonally grainward. and secured to the frontbar.

3. In a platform for harvesters, the combination of a frame comprising afront bar and side bars, a metallic bottom secured to said bars andhaving its rear portion bent upward in a plane parallel to the frontbar, and a beam located rearward of said bottom and extendingstubbleward at an angle to the front bar and secured thereto.

4:. In a platform for harvesters, the combination a frame comprising afront bar, a grainward side bar and a stubbleward side bar, a beamextending stubbleward at an angle to the front bar and secured to theside bars, races secured to the beam and extending diagonally grainwardand secured to the front bar, and a metallic bottom secured to the frontand side bars and to said braces.

' 5. In a platform for harvesters, the combination of a frame comprisinga front bar, a grainward side bar and a stubbleward side bar, a beamextending stubbleward at an angle to the front bar and secured to theside bars, a standard secured on'the stubbleward side bar, a metallicbottom secured to said bars and having its rear portion bent upward in aplane parallel to the front bar and secured to said standard and thegrainward end of the beam.

6. In a platform for harvesters, the combination of a frame comprising afront bar, a grainward sidebar and a stubbleward side bar, a beamextending stubbleward at an angle to the front bar and secured to theside bars, a standard secured on the stubbleward side bar, bracessecured to said beam and er:- tending diagonally grainward and securedto the front bar, a metallic bottom secured to said bars and having itsrear portion bent upward in a plane parallel to the front bar andsecured to said standard and the grainward end of the beam, and means tosecure said bottom to the front and side bars and to said braces.

VVILBUR J. COULTAS. FREDERICK D. WILSGN.

